- What is the nature and description of the request? 
As an admin I require the ability to see the different types of memory in use by my application. Splitting up the RSS and Cache (and swap?).

- Why does the customer need this? (List the business requirements here) 
Reporting on types of memory in use can prevent false alarms of memory usage. An application that is only occasionally memory heavy will result in some high cache usage. Once the application's RSS dies back down, Openshift metrics still reports the memory usage as high, even if most of the memory is reclaimable. 

- How would the customer like to achieve this? (List the functional requirements here) 
The memory usage pie chart on the Openshift Pod metrics page should be split into more "slices": RSS, Cache, and possibly swap.

I'm sure kernel experts can help identify which types of cache should be included.


- Is there already an existing RFE upstream or in Red Hat Bugzilla?

No, not that I could find. 

- Additional Info

Openshift metrics reports on cgroups' memory.usage_in_bytes. This RFE would require the change to using memory.stats which contains a breakdown of memory usage.